Followup.cc - FollowUp for email is a lightweight productivity suite that keeps your conversations and tasks from slipping through the cracks. Set perfectly timed reminders that arrive at the top of your inbox, right when you need them.

Nomie - Open-source mood and life tracking

HubSpot CRM - Free CRM software for small businesses.

Eevie - Eevie app is a digital guide that enables you to make changes into your daily living style so you can form new habits and can also learn about the impact of your current habits of the environment.

Streak - Manage customers inside Gmail

Habit Rabbit - Habit Rabbit app allows users to create life goals so they can track their goals and get things done by using small habits.